Which DIMM performs better, a double-sided dual-ranked DIMM or a double-sided single-ranked DIMM?

Given:

Double-sided dual-ranked DIMM

Double-sided single-ranked DIMM

To find: Better DIMM between double-sided single-ranked DIMM and double-sided dual-ranked DIMM based on their performance.

Solution:

Double-sided DIMM has two groups of chips. The computer memory controller recognizes each of those groups of chips distinctly and can only read/write to the groups one at a time...